Actually there are products one can use to get as close to an instant cycle as possible. The viable bacterial starter products will allow one to stock in a gradual fashion right away or if you want to stock fully then the require about a week (or two for the not great ones) to add a bit of anmonia and get them up to par for doing this.
This is not much different from using media from an established tank to set up a new tank. If one has enough media one can swipe from established tanks or combined with live plants, one can set up and instantly cycled and fish safe tank. With bottled bacteria you need a bit of time for the bacteria to fully revive and kick into full speed mode. Depending on how old the product is will determine how much time this takes.
For Dr. Tim's product this should be about a week give or take a couple of days and a dose or two of ammonia. Of course one can accelerate this simply by adding more bacteria than is suggesed for any given tank size. If you add 50 or 100% more bacteria than suggested, it is able to cope with a tank's bio-load sooner.
If you wish to try a starter product for cycling I would suggest Dr. Tim's One and Only Nitrifying Bacteria and as a second choice Tetra Safe Start. These products have different directions. Whichever one you choose, it is essential to follow the makers directions to the letter for what to do rather than any cycling articles (including the one here).
As for your filter and flow, move it to the center of the tank or else you can add another filter at the other end. There is no law that limits the number of filters one may use on a tank. Two filters also means that if one fails, your tank wont crash and burn as readily.
